BYBU is a self-care brand designed for 4 - 14 year olds. We create fun, safe nail polish (and more exciting products on the way!) to help you be yourself, be unique, and feel your best.

BYBU is made just for 4 - 14 year olds - with love, science, and safety in mind. Our formulas are gentle, fun to use, and free from common nail polish chemicals like formaldehyde, toluene, and DBP. And our UV colour-changing nail polish? It’s a total vibe shift in the sun 🌞.

Just head to our online store, pick your faves, and follow the easy checkout steps. Done and dusted!

Right now, BYBU nail polish is available in New Zealand only.

You can reach us anytime at hello@bybu.co.nz - we’re always happy to help!

No stress. Email hello@bybu.co.nz and we’ll sort it out as fast as we can.

Once your order ships, you’ll receive an email with a tracking link so you can follow its journey straight to your door. (Check your spam folder if you don’t see it!)

Our products are designed to be gentle on younger skin, but everyone’s skin is unique. We always recommend doing a quick patch test first.

We use photochromatic pigments, which are special colour-changing molecules created in a lab. When UV light hits them, they change into their brighter shade. Step back indoors and they return to their original look. It’s like a tiny science moment happening right on their nails.

Are photochromatic pigments natural?
They’re not natural pigments. They’re synthetic organic molecules made specifically for colour-change effects.

Our colour-changing polish uses a photochromatic powder that shifts in sunlight. It’s the ingredient that creates that fun indoor-to-outdoor colour change you will love.

The formula is designed for everyday wear and can behaves a little differently from regular polish. Because the colour-change ingredient is more delicate than standard pigments, it can take a touch longer to dry.

To help it set quicker:

• Apply thin, even coats

• Let each layer dry fully before adding the next

• Finish with our Be Protected Top Coat for quicker hardening and extra shine

Still soft? A quick blast of cool air from a fan or hairdryer will help it along.

Yep! It changes colour in the sun and flips back when you're inside. Like a secret trick your nails can do. ✨ If the shift starts to fade, you can swipe on another coat and top coat to boost the effect, or refresh your whole mani if it's been a while.

You can, but we recommend both. The Be Strong Base Coat helps the colour grip and protects your nails, while the Be Protected Top Coat adds shine and makes your mani last longer.

No stress. UV-reactive effect naturally fades over time. Your polish is still totally fine, it just needs a little refresh to bring the colour-change magic back.

💡 BYBU Tip: Keep your polish bottle tightly closed and out of direct sunlight when you’re not using it - that helps the UV magic stay strong for your next mani moment.

It depends on how active your hands are, but most people get a few days and even a week of chip-resistant wear - especially when using both base and top coats.

Absolutely! We never test on animals, and we don’t use animal-derived ingredients. Just good vibes and kind choices 💕

The magic only happens in direct sunlight - UV rays are the secret ingredient. If it’s cloudy or you’re behind glass, the colour change might be subtle.

Our nail polish is proudly made in Australia to the highest safety and quality standards.

We’re working hard to make our packaging as planet-friendly as possible. Nail polish bottles can often be reused or recycled - just check with your local recycling centre. More improvements are always on the way 🌍.